Algorithm

The algorithm which shifted the shot gathers in the previous paragraph computes the roots of a simple quadratic expression while looping over the samples of the input shot gather and the geophone locations of the output shot gather. For each sample at time t₁ and offset h₁ in the original gather s₁, a₁, b₁ are computed according to equations (2) and (3). To construct the shot gather s₂ the algorithm loops over the offset h₂ computing t₂ by solving the quadratic polynomial (10). Since our implementation shct.rst of this algorithm allows different layout parameter for the input and output shot gather, the shot continuation qualifies as a binning operator.